Negative length orbits in normal-superconductor billiard systems

Details Negative length orbits in normal-superconductor billiard systems Negative length orbits in normal-superconductor billiard systems

2000-03-16

arxiv.org/abs/cond-mat/0003276v1

Physical Review Letters 85, 3704 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures included

Scientific paper

10.1103/PhysRevLett.85.3704

The Path-Length Spectra of mesoscopic systems including diffractive scatterers and connected to superconductor is studied theoretically. We show that the spectra differs fundamentally from that of normal systems due to the presence of Andreev reflection. It is shown that negative path-lengths should arise in the spectra as opposed to normal system. To highlight this effect we carried out both quantum mechanical and semiclassical calculations for the simplest possible diffractive scatterer. The most pronounced peaks in the Path-Length Spectra of the reflection amplitude are identified by the routes that the electron and/or hole travels.

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